Chemical analyses, correlations, and ages of Upper Pliocene and Pleistocene ash layers of east-central and southern California.  by A.M. Sarna-Wojcicki [and others]
Contributors: Sarna-Wojcicki, A.M.
Publisher: U.S. Dept. of the Interior
Place of publication: Washington
Language: eng
Number of pages: 40
Subjects: Volcanic ash, tuff, etc. - California
Notes: 11